Home / 257,380,697.60-385,747,919.20-139,200,747.50

Finding the Fourth Proportional to 257,380,697.60, 385,747,919.20 and 139,200,747.50

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Solution

The fourth proportional to 257,380,697.60, 385,747,919.20 and 139,200,747.50 is: 208,626,362.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,380,697.60 : 385,747,919.20 = 139,200,747.50 : x
  2. Step 2: Convert to fraction form
    257,380,697.60/385,747,919.20 = 139,200,747.50/x
  3. Step 3: Cross multiply
    257,380,697.60x = 385,747,919.20 × 139,200,747.50
  4. Step 4: Simplify right side
    257,380,697.60x = 53,696,398,698,513,600
  5. Step 5: Solve for x
    x = 53,696,398,698,513,600/257,380,697.60
  6. Step 6: Final answer
    x = 208,626,362.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.